| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.karaf.shell.console.completer; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.CopyOnWriteArraySet; |
| |
| import org.apache.felix.gogo.runtime.CommandSessionImpl; |
| import org.apache.felix.service.command.CommandProcessor; |
| import org.apache.felix.service.command.CommandSession; |
| import org.apache.karaf.shell.console.Completer; |
| import org.apache.karaf.shell.console.jline.CommandSessionHolder; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.FrameworkUtil; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.ServiceListener; |
| |
| /** |
| * Completes command names |
| */ |
| public class CommandNamesCompleter implements Completer { |
| |
| private CommandSession session; |
| private final Set<String> commands = new CopyOnWriteArraySet<String>(); |
| |
| public CommandNamesCompleter() { |
| this(CommandSessionHolder.getSession()); |
| } |
| |
| public CommandNamesCompleter(CommandSession session) { |
| this.session = session; |
| |
| try { |
| new CommandTracker(); |
| } catch (Throwable t) { |
| // Ignore in case we're not in OSGi |
| } |
| } |
| |
| |
| public int complete(String buffer, int cursor, List<String> candidates) { |
| if (session == null) { |
| session = CommandSessionHolder.getSession(); |
| } |
| checkData(); |
| int res = new StringsCompleter(commands).complete(buffer, cursor, candidates); |
| Collections.sort(candidates); |
| return res; |
| } |
| |
| protected void checkData() { |
| if (commands.isEmpty()) { |
| Set<String> names = new HashSet<String>((Set<String>) session.get(CommandSessionImpl.COMMANDS)); |
| for (String name : names) { |
| commands.add(name); |
| if (name.indexOf(':') > 0) { |
| commands.add(name.substring(0, name.indexOf(':'))); |
| } |
| } |
| } |
| } |
| |
| private class CommandTracker { |
| public CommandTracker() throws Exception { |
| BundleContext context = FrameworkUtil.getBundle(getClass()).getBundleContext(); |
| ServiceListener listener = new ServiceListener() { |
| public void serviceChanged(ServiceEvent event) { |
| commands.clear(); |
| } |
| }; |
| context.addServiceListener(listener, |
| String.format("(&(%s=*)(%s=*))", |
| CommandProcessor.COMMAND_SCOPE, |
| CommandProcessor.COMMAND_FUNCTION)); |
| } |
| } |
| |
| } |
| |